碳酸钙矿化工艺出水浊度及稳定时间的研究  

Study on turbidity and stabilization time of effluent from calcium carbonate mineralization process

作　　者：张程贻 王琳[1] 牟春霞 ZHANG Chengyi;WANG Lin;MU Chunxia(College of Environmental Science and Engineering,Ocean University of China,Qingdao 266003,China)

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266000

出　　处：《海洋湖沼通报（中英文）》2024年第5期155-161,共7页Transactions of Oceanology and Limnology

基　　金：国家重点研发计划项目(2018YFC0408000,2018YFC0408004)。

摘　　要：CO_(2)酸化海水淡化水溶解石灰石可以有效对海水淡化水进行矿化,实验研究了CO_(2)酸化水流量、石灰石填料粒径、填料柱高度等对矿化出水浊度及出水稳定时间的影响,为碳酸钙矿化反应器工艺运行提供参考。研究表明,增加石灰石粒径、石灰石填料高度、CO_(2)通入比例及多次冲洗石灰石填料层有利于降低矿化出水浊度。增加石灰石填料粒径、CO_(2)酸化水流量,降低石灰石填料高度,可以缩短矿化出水稳定时间。石灰石颗粒选用1~2 cm、石灰石填料高度为36.8 cm、CO_(2)通入比例0.12,水力停留时间为3~4 min时为较优运行条件。The dissolving limestone in CO_(2) acidified desalination seawater can effectively mineralize the seawater.The experiment studied the flow rate of CO_(2) acidified water,the size of limestone filler,and the height of filler column on turbidity and stability time of the effluent,which can provide a reference for the process operation of calcium carbonate mineralization reactor.The results showed that increasing the size of limestone,the height of limestone filler,the ratio of CO_(2) inflow,and washing the filler layer of the limestone multiple times are beneficial to reduce the turbidity of the mineralized effluent.Increasing the particle size of the limestone filler,the flow of CO_(2) acidified water,and reducing the height of the limestone filler can shorten the mineralization effluent stabilization time.The limestone particles are 1-2 cm,the limestone filler height is 36.8 cm,the CO_(2) inflow ratio is 0.12,and the hydraulic retention time is 3-4 min,all of which are better operating conditions.

关 键 词：海水淡化 后矿化 工程运行 浊度 水质稳定 

分 类 号：TU991[建筑科学—市政工程]